Aylostera steinmannii

A tiny clustering high-Andean cactus (often sold as Rebutia steinmannii) from the puna of southern Bolivia and far northwest Argentina, around 3,500–4,100 m. It wants intense light, cold nights all year and a bone-dry, near-freezing winter to stay compact and flower.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Dry airBand in Plantistry

Light Full sunDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

Grows among grasses and rocks on open puna and high slopes, often half-buried in gritty mineral soil. Generalised from the genus and the measured sites; species-specific habitat notes are scarce.

Recorded at 3,500–3,800 m; the climate sites sit at roughly 3,300–4,150 m.

Bolivia (Potosí, Chuquisaca, Oruro, Tarija)Northwest Argentina (Jujuy, Salta)

🔒 Growing it like that

The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:

✓ Day and night temperature targets, and the limits it tolerates

✓ Humidity band, and how to hold it

✓ Light as DLI and PPFD for a grow light

✓ Wet and dry seasons, and whether to rest it

✓ Substrate and airflow

✓ A step-by-step setup to grow it like the wild

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Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app. Photo from Wikimedia Commons, used under its CC BY 3.0 licence, unmodified.